Sensitivity and specificity of the different indices regarding physician VAS < 10 mm.
| Variables | Sensitivity (95% CI) | Specificity (95% CI) | Likelihood Ratio |
|---|---|---|---|
| PASDAS ≤ 1.9 | 0.33 (0.17–0.51) | 1 (0.95–1) | — |
| PASDAS LDA | 0.93 (0.79–0.99) | 0.93 (0.85–0.97) | 14.6 |
| MDA 5/7 | 0.9 (0.74–0.98) | 0.69 (0.57–0.79) | 2.9 |
| MDA 7/7 | 0.46 (0.29–0.65) | 0.96 (0.88–0.99) | 11.72 |
| DAPSA ≤ 4 | 0.65 (0.46–0.81) | 0.98 (0.92–0.99) | 49.22 |
| cDAPSA ≤ 4 | 0.75 (0.56–0.88) | 0.97 (0.9–0.99) | 28.13 |
| DAPSA LDA | 1 (0.89–1) | 0.36 (0.25–0.47) | 1.56 |
| cDAPSA LDA | 1 (0.89–1) | 0.36 (0.25–0.47) | 1.56 |
VAS: visual analog scale; PASDAS: Psoriatic Arthritis Disease Activity Score; MDA: minimal disease activity; DAPSA: Disease Activity Index for Psoriatic Arthritis; cDAPSA: clinical DAPSA; LDA: low disease activity.